projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 11ff2c71 | 1 | /* LzHash.h -- HASH functions for LZ algorithms\r |
| 1e230224 | 2 | 2015-04-12 : Igor Pavlov : Public domain */\r |
| 11ff2c71 | 3 | \r |
| 1e230224 LG |
4 | #ifndef __LZ_HASH_H\r |
| 5 | #define __LZ_HASH_H\r | |
| 11ff2c71 LG |
6 | \r |
| 7 | #define kHash2Size (1 << 10)\r | |
| 8 | #define kHash3Size (1 << 16)\r | |
| 9 | #define kHash4Size (1 << 20)\r | |
| 10 | \r | |
| 11 | #define kFix3HashSize (kHash2Size)\r | |
| 12 | #define kFix4HashSize (kHash2Size + kHash3Size)\r | |
| 13 | #define kFix5HashSize (kHash2Size + kHash3Size + kHash4Size)\r | |
| 14 | \r | |
| 1e230224 | 15 | #define HASH2_CALC hv = cur[0] | ((UInt32)cur[1] << 8);\r |
| 11ff2c71 LG |
16 | \r |
| 17 | #define HASH3_CALC { \\r | |
| 18 | UInt32 temp = p->crc[cur[0]] ^ cur[1]; \\r | |
| 1e230224 LG |
19 | h2 = temp & (kHash2Size - 1); \\r |
| 20 | hv = (temp ^ ((UInt32)cur[2] << 8)) & p->hashMask; }\r | |
| 11ff2c71 LG |
21 | \r |
| 22 | #define HASH4_CALC { \\r | |
| 23 | UInt32 temp = p->crc[cur[0]] ^ cur[1]; \\r | |
| 1e230224 LG |
24 | h2 = temp & (kHash2Size - 1); \\r |
| 25 | temp ^= ((UInt32)cur[2] << 8); \\r | |
| 26 | h3 = temp & (kHash3Size - 1); \\r | |
| 27 | hv = (temp ^ (p->crc[cur[3]] << 5)) & p->hashMask; }\r | |
| 11ff2c71 LG |
28 | \r |
| 29 | #define HASH5_CALC { \\r | |
| 30 | UInt32 temp = p->crc[cur[0]] ^ cur[1]; \\r | |
| 1e230224 LG |
31 | h2 = temp & (kHash2Size - 1); \\r |
| 32 | temp ^= ((UInt32)cur[2] << 8); \\r | |
| 33 | h3 = temp & (kHash3Size - 1); \\r | |
| 34 | temp ^= (p->crc[cur[3]] << 5); \\r | |
| 35 | h4 = temp & (kHash4Size - 1); \\r | |
| 36 | hv = (temp ^ (p->crc[cur[4]] << 3)) & p->hashMask; }\r | |
| 11ff2c71 | 37 | \r |
| 1e230224 LG |
38 | /* #define HASH_ZIP_CALC hv = ((cur[0] | ((UInt32)cur[1] << 8)) ^ p->crc[cur[2]]) & 0xFFFF; */\r |
| 39 | #define HASH_ZIP_CALC hv = ((cur[2] | ((UInt32)cur[0] << 8)) ^ p->crc[cur[1]]) & 0xFFFF;\r | |
| 11ff2c71 LG |
40 | \r |
| 41 | \r | |
| 42 | #define MT_HASH2_CALC \\r | |
| 1e230224 | 43 | h2 = (p->crc[cur[0]] ^ cur[1]) & (kHash2Size - 1);\r |
| 11ff2c71 LG |
44 | \r |
| 45 | #define MT_HASH3_CALC { \\r | |
| 46 | UInt32 temp = p->crc[cur[0]] ^ cur[1]; \\r | |
| 1e230224 LG |
47 | h2 = temp & (kHash2Size - 1); \\r |
| 48 | h3 = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); }\r | |
| 11ff2c71 LG |
49 | \r |
| 50 | #define MT_HASH4_CALC { \\r | |
| 51 | UInt32 temp = p->crc[cur[0]] ^ cur[1]; \\r | |
| 1e230224 LG |
52 | h2 = temp & (kHash2Size - 1); \\r |
| 53 | temp ^= ((UInt32)cur[2] << 8); \\r | |
| 54 | h3 = temp & (kHash3Size - 1); \\r | |
| 55 | h4 = (temp ^ (p->crc[cur[3]] << 5)) & (kHash4Size - 1); }\r | |
| 11ff2c71 LG |
56 | \r |
| 57 | #endif\r |